Open your video-editing program, then create a new project.
Import the video footage for your new project, then drag it from the Import or Project window to the Editing Timeline.
Select the part of the footage on the Editing Timeline where you want the text to be included.
Select the Make Titles or Credits or the Text option in your video-editing program's menu options. Its exact name and location will vary depending on the editing program you use.
Type the text you want to include on the selected part of the film.
Adjust the attributes and time duration of the text according to your preferences. The attributes mainly include the font name, size and color. Also, choose the location where you want it to appear on the screen. These options are typically located in the task pane of the Text window where you type your text.
Play the edited video and check how the text appears on the footage. Make the necessary adjustments, if any.
You may also add some animation or transition effects on your text as it appears on the film. While this feature varies from one video-editing program to another, the native Windows-based program Windows Movie Maker provides the selection Change the Title Animation in the task page. Meanwhile, a Mac-based computer provides the selections Transitions and Video FX on its work interface to add effects in your text.
Render the video to finalize the juxtaposition of the texts and the video, along with any effects you made in the edit. Then export the video in your preferred video file format. Popular formats include MOV, MP4, WMV and AVI.